[导读]：1 对水源的要求1 Requirements for water source当洒水车(东风或解放)利用河沟、池塘作为水源时，注意吸水管端部全部没入水中。为避免
1. Requirements for water source
When the sprinkler (Dongfeng or Jiefang) uses ditches and ponds as the water source, pay attention to that the end of the suction pipe is completely submerged. In order to avoid inhalation of stones or more sediment and floating debris, the end of the suction pipe is generally equipped with a filtering device, which is strictly prohibited to be removed when absorbing water. If the water source is shallow, it is necessary to dig deeper the water intake in advance to ensure that there are no sundries and air. Different sprinkler pumps have different requirements on water source. Clear water pump requires no impurities in the water, while turbid water pump requires no stones and too much sediment in the water.
2. Add water
Before each suction of centrifugal water pump, a certain amount of water must be added into the pump, and the water inlet must be closed after adding. When the self-priming pump is used for the first time, it needs to add water, and later it does not need to add water.
3. Vacuum is necessary for water inlet pipe
When absorbing water, the water inlet pipe system must maintain a certain degree of vacuum in order to draw water into the tank. The water inlet pipe system must be sealed and reliable, the hose shall not be damaged, and the hard pipe shall not have cracks, otherwise air leakage will occur, which will also cause the situation that water cannot be absorbed.
4. Park in gear
No matter before watering or before watering, the power take-off device must be put into gear when the vehicle stops.
5. Drainage in winter
Before winter comes, the water in the water pump and water pipe should be emptied to prevent frost cracking. In the north of China, construction will not be carried out in the severe winter, so the water in the water pump and water pipe will be drained immediately after the construction to prevent future troubles.
6. Precautions for watering
The front nozzle of the sprinkler is located at a low position, close to the ground, with a large spraying pressure, which can be used to wash the road; the rear nozzle is located at a high position (generally one is installed at the left and right of the rear nozzle of the sprinkler), with a wide spraying water surface, which can be used for road construction sprinkling. When the rear nozzle is used, the front nozzle should be closed; when the adjustable nozzle is used, the sprinkling width can be adjusted as required. The wider the spraying width is, the less the overlap in the middle and the more uniform the spraying density.
7. Lubrication and fastening
In the use process, the lubrication points of the transmission assembly shall be lubricated regularly, and the coupling points shall be fastened frequently to ensure normal use.
8. Regular sewage discharge
The water storage tank of the sprinkler is provided with a drain pipe, the inlet of which is the lowest point of the water tank. After a period of use, the drain pipe switch shall be opened regularly to remove the sundries accumulated in the tank until the water becomes clear.